<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
    <form action="/doLogin" method="post">
      <input placeholder="用户名" name="username"><br>
      <input placeholder="密码" name="password">
      <input type="hidden" name="url" th:value="${url}">
      <input type="submit" value="提交">
    </form>
</body>
</html>